baber/WOPTO huggingface dataset:
Patent GB-1108963-A (GB)
Title: Circuit for switching a.c. power to a load
IPC: H03K17/72
Filed: 1965-06-22
Abstract: 1,108,963. Fire alarms. BOEING CO. 22 June, 1965 [26 June, 1964; 14 Sept., 1964], No. 26343/65. Heading G4N. [Also in Divisions G1, H2 and H3] A circuit for controlling the A.C. power supplied to a load comprises a bridge having four rectifiers together with a pair of controlled rectifiers so arranged that one of the controlled rectifiers, when conductive, inhibits conduction of the other controlled rectifier and that the change of state from non-conduction to conduction of the controlled rectifiers occurs at a selected point in the cycle of the A.C. power supply. A load 13 is supplied with alternating power from an A.C. source 10 by way of a bridge having four uncontrolled rectifiers 14-17. Across the D.C. terminals 18, 19 of the bridge are connected two silicon-controlled rectifiers 20, 25, the polarities of which are similarly arranged. The anodes 21, 26 are connected together by way of a resistor 29, the cathodes 22, 27 are directly connected together and the gate electrode 23 of SCR 20 is connected to anode 26 of SCR 25 by way of a diode 33. With the switch 30 in the position shown on contact 32 the gate 28 is connected to the anode 26 thus rendering SCR 25 conductive. Negative potential is thereby applied to gate 23 of SCR 20 to maintain it non-conductive and the load 13 is consequently maintained de-energized. To energize the load the switch 30 is moved to contact 31. Irrespective of the point in a cycle of-the A.C. supply at which this changeover is made the SCR 25 will remain conductive until the end of the positive half-cycle and at this point the SCR 20 will be conditioned for conduction which will take place when its anode voltage begins to increase positively from zero thus allowing current to flow in the load 13. An external source 35 provides a small positive signal which is applied to the gate electrode 28 so as to ensure conduction of SCR 25 when the switch 30 is in the OFF position. To counteract a slight time lag which occurs in conduction of an SCR when the anode voltage thereof rises positively from zero means are provided whereby the gate signal of the SCR leads the anode voltage by 60 degrees. In a second embodiment the system is used as a smoke detection apparatus in which case the switch 30 is replaced by a photosensitive resistor and the load 13 replaced by an audio or visual alarm such that alteration in the amount of light falling on the resistor will cause operation of the alarm.
Patent GB-151018-A (GB)
Title: Internal combustion engines with counter-running pistons
IPC: F02B75/28
Filed: 1920-09-15
Abstract: 151,018. Gronvall, J. G. Sept. 16, 1919, [Convention date]. Void [Published under Sect. 91 of the Act]. Starting. - A doubleacting-engine comprises a piston 2 which reciprocates in an outer piston 1 surrounded by a cylinder 5. At starting, compressed air is admitted to one or both pump chambers 12 through valves 24 in the heads of the cylinders.
Patent GB-1263309-A (GB)
Title: Joint structures and clips therefor
IPC: F16B12/12
Filed: 1969-05-23
Abstract: 1,263,309. Furniture joints. MODULAR SYSTEMS Inc. May 19, 1969 [May 29, 1968], No.26484/69. Heading A4H. A resilient metal clip 12 for connecting two members, e.g. wood panels 50, 52, comprises end flanges 16, 14 screwed to the bottom of a recess 54 in panel 52, a raised central portion 30 connected to the flanges 16, 14 through a wall 22 and spaced legs 24, 26, and a slot (28), Fig. 1 (not shown), in portion 30 closed at one end and communicating with the space between the legs 24, 26 at the other end. Wedging surfaces 38, 40 on opposite sides of the slot slope downwardly towards the slot closed end and a locating flange 44 extends upwardly either from a wall 32 adjoining flange 14 or from the flange 14 itself. A shoulder stud 60 is screwed to panel 50 and its head 62 inserted in the open enlarged end of slot (28) beneath the surfaces 38, 40. By relative movement between the clip 12 and screw 60, the screw 60 is moved to the closed (left) end of the slot, surfaces 38, 40 drawing the screw 60 downwardly and thereby pulling the panels 50, 52 together. The screw 60 forces flange 44 downwardly till the head reaches the slot end. The flange 44 then returns to its normal position to lock screw 60 in the slot. The clip may be used to connect a metal shelf (70), Figs. 9-11 (not shown), to a metal side wall (86), the clip being screwed or welded to the shelf. The locking flange 44 may be omitted. The side wall (86) may have a vertical slot in which the shoulder stud (60<SP>1</SP>) is slideably adjustable; side wall (86) may be replaced by vertical rails.
Patent GB-919763-A (GB)
Title: Method for producing telephone fee pulses
IPC: H04M15/10
Filed: 1959-08-04
Abstract: 919,763. Automatic exchange systems. " SODECO" SOC. DES COMPTEURS DE GENEVE. Aug. 4, 1959 [Jan. 9, 1959], No. 26531/59. Class 40 (4). In a system wherein subscribers are provided with charge indicators, the D.C. impulses which operate the subscriber's meter at the exchange also connect battery to a transistor oscillator T which feeds A.C., e.g. of 16 kc., over a transformer n1 . . . n3 to the line in a series circuit, Fig. 3, or a simplex circuit, Fig. 4. The oscillator is stabilized by a Zener diode D, and the A.C. is prevented from transmission forward by a lowpass filter of which winding n3 forms a part. Slightly modified circuits are described. The oscillator and filter may be housed in a small casing provided with jacks.
Patent GB-924432-A (GB)
Title: Improved means for the identification of conductors in electric cables or circuits
IPC: G01R31/02
Filed: 1958-08-18
Abstract: 924,432. Identifying cable conductors. T.S.G. SEAWARD. Aug. 17, 1959 [Aug. 18, 1958], No. 26546/58. Class 37. A device for identifying conductors of a multiple cable comprises ten series resistors R 1  to R 10  connected between terminals 1 and C with terminals 2 to 10 connected to the junctions of successive resistors; the cable conductors being connected to terminals 1 to 10 and the cable armour, earth, or a spare circuit connecting common terminal C to terminal 28 at the far end of the cable in series with terminal 30, an ammeter 26, a source of E.M.F., a compensating resistor RC adjustable for testing long or high resistance cables, and a limiting resistance RL adjustable for full-scale meter deflection with 28, 30 short-circuited. Successive conductors are connected to terminals 30, so that they are successively identifiable by meter calibrating corresponding to the terminals of the resistance network to which such conductors are connected. Alternatively each resistance may be connected at one end to the common terminal and at the other to a specific cable conductor.
Patent GB-519032-A (GB)
Title: Improvements in or relating to blades for axial flow turbines
IPC: F01D5/14
Filed: 1938-09-12
Abstract: 519,032. Elastic fluid turbines. ENGLISH ELECTRIC CO., Ltd., CHITTENDEN, J. P., and YATES, H. G. Sept. 12, 1938, No. 26558. Drawings to Specification. [Class 110 (iii)] In an axial flow turbine having a conical rotor and a conical casing, the shape of the crosssection of the blades progressively, changes throughout their length to give such a variation of the circumferential component and of the radical component of the velocity of the fluid passing through the blading that the fluid follows a determined conical path between the cones of the rotor and casing. To this end, the circumferential component of the velocity of the fluid at any point so differs from a value inversely proportional to the distance of that point from the axis that that velocity has the radial component necessary for the fluid to follow the determined conical path.
Patent GB-1151364-A (GB)
Title: Device for the Automatic Stopping of a Machine such as a Cigarette-making Machine
IPC: A24C5/31
Filed: 1966-06-15
Abstract: 1,151,364. Cigarette making machines. SERVICE D'EXPLOITATION INDUSTRIELLE DES TABACS ET DES ALLUMETTES. 15 June, 1966 [17 June, 1965], No. 26596/66. Heading A2C. The invention relates to machines such as cigarette making machines which have an electric control system for stopping the machine if a faulty product issues from the machine. A faulty product is detected by a photo-electric cell and light source 1, 3, the output of which is fed to an amplifier comprising transistors 13-16 (powered from supply terminals 19, 20), a relay 4 being connected to the amplifier output. The contacts of relay 4 normally cause a relay 5 to be energized which connects machine terminals 19, 20 and charges a condenser 8, and lights a green lamp 17. In the presence of a faulty product relay 4 is energized to light a red lamp 18 and de-energize relay 5. De-energization of relay 5 breaks contacts 19, 20 to stop the machine, and allows condenser 8 to discharge through relay 6 and energize it. Relay 6 completes a holding circuit for itself and alters a function of the machine via contacts 21, 22. Meanwhile the capacitor 10 is being charged via a variable resistor 11 and a contact of the energized relay 4. After a suitable time delay the voltage across capacitor 10 is sufficient to energize relay 7 which closes the machine contacts 19, 20 so that manual operation of the button 12 to break the holding circuit of relay 6 restores the original machine function via contact 22 and production is re-commenced. If products are still faulty relay 7 will become de-energized again as condenser 10 is discharged and the contacts 19, 20 will again be broken. If the products are satisfactory the relay 4 is de-energized, relay 5 is energized to maintain contacts 19, 20 closed after relay 7 is de-energized, and the green lamp is again lit.
Patent GB-1377776-A (GB)
Title: Process for the oxidation of silicones
IPC: B05D5/08
Filed: 1972-06-08
Abstract: 1377776 Silicone lubricant coatings SOC DES USINES CHIMIJUES RHONE-POULENC 8 June 1972 [9 June 1971] 26838/72 Heading B2E [Also in Divisions C3 and C5] Metal surfaces or surfaces of oxides of the ruby, corundum or sapphire type are coated with a lubricant comprising a polar silicone fluid having its terminal methyl groups at least partially oxidised, the said fluid being applied either separately or in a non-polar silicone or mineral oil containing preferably 0.5-10% wt. of the said polar silicone. The lubricant may be diluted in a non-polar solvent such as difluorodichloromethane, benzene or petroleum ether. The particular polar silicone described is a dimethylpolysiloxane having a pH of less than 5.6.
Patent GB-532989-A (GB)
Title: Improvements in or relating to electric motor controllers
IPC: H02P1/04
Filed: 1939-09-29
Abstract: 532,989. Master control of two motors; indicating. IGRANIC ELECTRIC CO., Ltd. Sept. 29, 1939, No. 26871. Convention date, Nov. 21, 1938. [Class 38 (iii)] Depression of an " inch push-button 39 or an " on push-button 37 effects operation of indicators 50, 52 while a second depression immediately effects operation of the machine either by an inching motor or a main running motor. Operation of the button 39 energizes a relay 2CR which energizes a reset relay which connects a signalling bell 52 and flashing signalling lamps 50 to the supply. This circuit is maintained when the button 39 is released and a relay 3CR connects an inch relay to the button 39 so that on the second operation this relay is operated to close a switch SM which energizes an inching motor, the signalling circuits being opened under control of the reset relay. Operation of the " on " button 37 energizes the relay 2CR which brings in the signalling circuits as for inching. A second operation of the button effects closure of the switch SM to start the machine, the on " relay also starting a pilot motor M which operates a crosshead starter 36 whereby the main motor is brought in, in place of the inching motor and accelerated. An " off " switch controls deceleration and a stop switch 40 restores the switches to their position shown. Signalling during operation by the larger motor may be effected by operation of the inch switch. A " safe " switch may prevent operation of the machine, and prevents further acceleration when operated during running. The stop switch, when operated, provides for return of the controller 36 to the initial position.
Patent GB-1195693-A (GB)
Title: Improvements in or relating to Annular Fluid Pressure Seals
Inventor: WIGGINS BRIAN JOHN
IPC: F16J15/20
Filed: 1966-06-16
Abstract: 1,195,693. Piston and stuffing-box packing. JAMES WALKER & CO. Ltd. 13 July, 1967 [16 June, 1966], No. 26875/66. Headings F2B and F2T. In packing 1 for a piston or stuffing-box and comprising a sealing ring 2 of resilient material, e.g. rubber and an anti-extrusion ring 10 of less resilient material, e.g. synthetic plastics material engaging an end face of the ring 2, the antiextrusion ring 10 has an axially extending part 15 which engages the inner or outer peripheral surface of the ring 2. The ring 10 has a part 12 which fits in dovetail manner in a recess 5 in the ring 2. In a modification, Fig. 3 (not shown), the anti-extrusion ring (10) has parts (19) and (20) engaging the inner and outer peripheral surfaces respectively of the ring (2).
Patent GB-864511-A (GB)
Title: Improvements in and relating to the hardening of foundry cores or moulds
IPC: B22C9/12
Filed: 1959-08-06
Abstract: 864,511. Treating moulds and covers. HANSBERG, F. Aug. 6, 1959 [Aug. 30, 1958 (2)], No. 26973/59. Class 83 (1). [Also in Group XXVIII] Apparatus for hardening foundry cores and moulds by gaseous or atomized reagents, e.g. CO 2  gas, comprises a vacuum-chamber in which the moulds or cores are first subjected to an underpressure and then to the hardening means, the suction cylinder for the production of the vacuum being of nearly the same, or larger aircapacity, than the vacuum chamber. The vacuum-dome 13 is vertically-movable by the piston 16, and the large-capacity suction-piston 3 is operated by a piston 4, air being extracted from the dome through a spring-loaded non- return valve 9, and ejected from the cylinder through a spring-loaded valve 11. CO 2  gas &c. may be admitted through a bore 7a or 7b. The suction-piston is of a material resistant to the hardening-medium, e.g. rubber, plastic or ceramic.
Patent GB-1192435-A (GB)
Title: Improvements in or relating to Machines for Making Tubular Rivets from a Band
Inventor: KONSTANTINOV KONSTATIN ALEXEEV
IPC: B21J15/04
Filed: 1967-06-12
Abstract: 1,192,435. Making rivets; bending; shearing. K. A. KONSTANTINOV. 12 June, 1967, No. 26984/67. Headings B3A, B3E and B3W. A machine for making and setting tubular rivets from a band 13 comprises a device 11, 12 for feeding the band, a device for cutting the band into workpieces, a pair of forming heads 28, 29 which co-operate with a pin 23 to shape the band into a tubular rivet and a punch and die to set the rivet. The strip is fed by a punch and die 11, 12 which bend the band to V-shape during the feed stroke. The punch and die are activated and reciprocated by levers 16, 17. The lever 16 has an adjustable pivot 19 which alters the length of band fed. The shaped band passes through a V-shaped hole 25 in a plate 26 and a workpiece is cut from the band by the head 29 co-operating with the hole 25. The forming heads 28, 29 are moved towards the pin by cylindrical cams 35, 36 against which the ends of the arms 33, 34 abut. The cams are adjustable to vary the bending stroke. After the workpiece has been formed on the pin 23 and the heads withdrawn it is deformed in a hole in a plate 44, e.g. a printed circuit board. The punch 22 is mounted coaxially with a rod 8 and reciprocated by the cranks 4. The pin is movably held in the punch and has a recess 48 which co-operates with a projection 49 on the rod 46 of the die which projects through the hole in the plate 44. The tube is forced off the pin into the hole by the punch 22 and its ends deformed by a flange 47 on the rod 46 and the punch. Different punches may be used to form rivets I, II, III. The plate 44 depresses the sleeve 43 to close the contact 45 and start the machine and the rod 46 when depressed by the pin 23 breaks the contact 45 to stop the machine, but the machine is immediately started again by the cam switch 50.
Patent GB-446154-A (GB)
Title: Combined ironer and kitchen utility mixer
IPC: A47J43/044
Filed: 1935-10-01
Abstract: 446,154. Ironing-machines. ELECTRIC HOUSEHOLD UTILITIES CORPORATION, West Cermak Road, Chicago, U.S.A. Oct. 1, 1935, No. 27117. Convention date, Oct. 5, 1934. [Class 138 (ii)] [See also Group II] A domestic ironing-machine A is adapted to receive a food mixing device C and to have its top 4 suitably disposed as a table for food preparation when the device C is in use. The ironing machine comprises a roll 9 to and from which a shoe is moved, power being imparted to the roll through a motor-driven shaft 11 with or without the interposition of a handoperated clutch 18. When the ironing-machine is in use it is removed from a table 1 and supported on its own legs 5. These legs telescope into the legs of the table 1 when food is to be prepared, the mixer C having a shank 21 which passes through a hole 6 in the top 4 and slides into a socket 20 extending up from a housing D supporting the roll 9. Pins projecting from the socket 20 may be provided to prevent rotation of the shank 21. The mixer blade 30 is driven through a shaft 29 by a spindle 24 having a splined sleeve 23 passing over and engaging the top of the shaft 11. The top 4 may be of porcelain enamel, and the hole 6 may have a cover for use when the mixer C is removed.
Patent GB-1012246-A (GB)
Title: Vacuum measuring cell for an ionisation gauge
IPC: G01L21/00
Filed: 1963-07-09
Abstract: 1,012,246. Ionization manometers. M. M. DUNKEL [trading as E. LEYBOLD'S NACHFOLGER]. July 9, 1963 [July 9, 1962], No. 27179/63. Heading H1D. A vacuum measuring cell for an ionization gauge comprises a primary electron source 3 located in a first compartment " A " and an ion catcher 13 located in a second compartment " B " which is separated from the first compartment by a parting wall 5 traversed by a capillary 1 through which an electron beam emitted by the source 3 can pass. The thermionic filament 3 is provided with a focusing electrode 4. The wall 5 and capillary 1 are metallic and act as an accelerating electrode. Alternatively a metallic capillary may be let into a glass wall (Fig. 3, not shown). The compartment " A " is connected through a branch 12 to a vacuum pump, or a getter is provided in the compartment. An alternative arrangement (Fig. 2, not shown) utilizes a cold cathode, and gas desorbing surfaces are provided in compartment " A." In both arrangements the capillary, prevents contact of the electron source by the gas whose pressure is to.be measured.
Patent GB-968015-A (GB)
Title: Improvements relating to centrifugal pumps
Inventor: PARRY JOHN GERALD
IPC: F04D29/22
Filed: 1962-07-16
Abstract: 968,015. Mechanical seals. ALFA-LAVAL CO. Ltd. July 4, 1963 [July 16, 1962], No. 27195/62. Heading F2B. [Also in Division F1] A shaft seal for a centrifugal pump comprises a carbon ring 25 in sealing engagement with a pump casing wall 17 and sealed to the pump shaft 19 by a rubber ring 26, the ring 26 having a lug which projects radially outwards through a slot in a drive collar 24 and axially forward into a notch in the ring 25 so that these three parts are held together for rotation. Drive collar 24 has a rearwardly extending annular flange, slotted to receive a drive pin carried by the shaft 19, and is urged forwardly by a compression spring 23 abutting against a shoulder on the shaft.
Patent GB-1107123-A (GB)
Title: Recovery of copper zinc values
IPC: C01G9/00
Filed: 1965-06-28
Abstract: Copper or zinc values, or both, are recovered from an ore comprising at least one of zinc carbonate, zinc sulphide, zinc oxide, copper sulphide, copper oxide and the hydrated forms of these oxides, by (1) contacting the ore with liquid nitrogen tetroxide and one to two times the theoretical amount of water required to form the water-soluble nitrate of all the zinc and/or copper and the weight of the nitrogen tetroxide present being at least 15 times the weight of the water present, (2) removing the excess nitrogen tetroxide, e.g. by volatilization after filtration of the reaction mixture and (3) leaching the water-soluble nitrate from the treated ore with water. In preferred embodiments finely divided ore may be first mixed with water and then contacted with the N2O4, or first mixed with N2O4 and water added slowly to this mixture while the mixture is agitated, or the water and N2O4 may be mixed with the ore simultaneously and the mixture refluxed. Step (1) is preferably carried out at 10-21 DEG  C. for a period of 1 1/2 -2 hours and the excess N2O4\t may be recovered and recycled to stage (1) Ores specified for treatment are: chalcopyrite (CuFeS2), chalconite (Cu2S), bornite ( (Cu5FeS4), tetrahedrite (Cu3SbS3 + (Fe1Znl6Sb2S9), malachite (CuCO3.Cu(OH)2), azurite (2CuCO3.Cu(OH)2) cuprite (Cu2O), sphalerite (ZnS) smitheonite (2nCO3) and hermimorphite ((ZnOH)2SiO3).
Patent GB-392810-A (GB)
Title: Television transmission method
IPC: H04N3/32
Filed: 1932-10-03
Abstract: 392,810. Television. ARDENNE, M. VON, 19, Jungfernstieg, Lichterfelde, Berlin. Oct. 3, 1932, No. 27383. Convention date, Oct. 6, 1931. Drawings to Specification. [Class 40 (iii).] Relates to the television system in which a spot of light of constant intensity scans a field of view with a varying speed under the control of two oscillations, one producing linear movement of the light spot and the other producing movement transverse to the lines. The two oscillations comprise frequency bands which overlap. According to the invention, the frequency bands of the two oscillations are so selected that they may be modulated on to a single carrier frequency and separated after demodulation. Preferably the oscillation controlling movement transverse to the lines is restricted to a frequency band of 0À750 cycles per second and the other oscillation does not comprise frequencies lower than 1,000 cycles per second. This selection of frequency band width and separation at the receiver is effected by the use of filter circuits. Specification 355,319 is referred to.
Patent GB-931405-A (GB)
Title: Photographic colour separation negatives
IPC: G03F3/02
Filed: 1959-08-12
Abstract: 931,405. Colour-corrected negatives. S. TASKER, and D. S. TASKER. July 25, 1960 [Aug. 12, 1959], No. 27519/59. Drawings to Specification. Class 98 (2). A method of making a colour-corrected colour separation negative comprises placing a transparent sheet over the original and applying a retouching medium to areas of the sheet corresponding to selected areas of the original to obtain a colour correction mask for a selected colour aspect, separately photographing both the original and the mask in register to obtain superimposed latent images of a colour aspect of the original and of the corresponding mask, and developing the latent images to obtain a colour-corrected colour-separation negative. In an embodiment, more than one mask may be made and photographed in register with the latent image of the original, e.g. to give tinting or soft edge effects or to intensify the whites in which case one mask is made with its areas corresponding to all the colour aspects opacified leaving only the white areas transparent while the other mask is only opacified in those areas corresponding to the same colour as has been photographed from the original.